Radiator



R. NAUJOKS.

RADIATOR. APPLICATION ru n) APR. 17, 1919.

1,399,146, Patented Dec. 6,1921.

UNITED srArg PATENT OFFICE.

RUDOLPH NAUJOKS, OI LOS AN GELES, CALIFORNIA.

RADIATOR.

Application filed Apri1 17,

To all whom it may concern:

Be it known that I, RUDOLPH NAUJOKS, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented new and useful Improvements in Radiators, of which the following is a specification.

This invention relates to radiators such as are used for automobile, tractor and aircraft engines and the like; and the invention has pacularly to do with improvements in that type of radiator aimed to make a radiator of large water capacity and large effective air surface; a radiator which is rigid and strong in construction, and offers a minimum of air resistance; a radiator requiring the minimum amount of material in its construction; and a radiator in which all parts of the water compartment walls may be easily reached for purposes of repairs or replacement.

Due to the fact that the novel features of my construction reside in conformations of the elements of my radiator, and are rather difiicult to explain without specific reference to drawings, I shall immediately proceed to a detailed and full description of a specific preferred form of radiator embodying my invention. It will be understood however that I do not thereby mean to limit myself to the particular and specific details so described. For the purpose of such detailed description I refer to the accompanying drawings, in which Figure 1 is a front View of a part ofmy improved radiator; Fig.2 is a horizontal section taken as indicated by line 22 on Fig.1 Fig. 3 is an enlarged vertical section taken as indicated by line line 3-3 on Fig. 2; Fig. 4 is a view showing the face of my radiator, this figure being similar to Fig. 1, except that Fig. l shows the face portions only, for clarit of illustration; and Fig. 5 is a perspeective which illustrates the configuration of one element of my improved radiator.

Each element of my improved radiator is made up of two corrugated copper sheets 10 which, for each element, are assembled in nesting relation to each other; so that the course of the water through the element is a zigzag course. This relation of the two walls of each element is clearly illustrated in Fig. 3. Now instead of making these two walls parallel (considering them as in a horizontal plane of section as shown in Specification of Letters Patent.

Patented Dec. 6, 1921.

any interposed connecting member, and the elements therefore in this specific form have only the thickness of the two copper sheets along these front and rear lines 12, yet each element. has a considerable water capacity on account of its widened center, due to the bending of the two walls, as stated.

In Figs. 2 and 3 the water spaces are shaded in order to facilitate the illustration. It will be seen that the horizontal section of the water space in the element is, at any point, a diamond shaped section. This is strictly true where the bend in the two walls is at the center of the two walls. For cer tain purposes for radiators which are of more than the usual thickness, the bend in the walls may be made nearer one face than the other face of the radiator; and in that case the horizontal section of an element at any point is not quite diamond shaped but will be like two triangles placed base to base, the triangles being of equal bases but of different heights. This shape is generally true of the specific form herein described; but it will be readily seen that the specific sectional shape may be varied and still answer to the general characteristics of my radiator element; that is, be relatively thick medially and relatively thin at the edges. Each element having been made in the manner herein stated, is two longitudinal edge having been soldered to form a proper joint between the edges of the walls, then a radiator is assembled in the manner shown in the various figures. When the elements are assembled, they are not placed in nesting relation, but are placed in opposing relation; so that, the points indicated 15 abut each other. These points 15 are points at the bend in the radiator wall and at the outermost part of the corrugations. The elements being clamped or otherwise held together in this relation, the whole assembly is dipped v in a solder bath deep enough for the solder to reach the points of contact. The points of contact are thus soldered together. In

order to use a solder bath of the usual depth,

one side of the radiator than the other, where the radiator is unusually thick.

The body of the radiator having been assembled in the manner described, the remainder of the radiator, the top and bottom boxes and the exterior finish, etc., are of course made in any usual or desired manner.

There are several peculiar features of my radiator that I may particularly speak of. In the first place it will be seen that the air passages are all wide at each face of the radiator. This is clearly shown in Fig. 2 and in Fig. 4. The fact that the passages are wide attheir outer ends and the fact that the walls extend back obliquely, instead of at right angles to the outer faces of the radiator, makes the walls easy to reach and easy to work with for purposes of repairing.

The air passages are entirely free'of any interposed fins or other connecting members which are necessary on many types of radiators in order to make connections between adjacent water carrying elements. My radiator has nothing in its construction except the walls of the water carrying elements themselves; yet it has comparatively wide and free air passages; it has a strong structure, with sufiicientrigidity and yet an elasticity which allows a desirable amount of.

distortion without breaking; and it has the requisite water capacity. Further than that my improvedradiator ofiers a minimum of air resistance as theelements on both their forward and rear edges are relatively thin.

The method of inter-connection, involving.

attachmentof adjacent elements, preferably atpoints at their centers only, allows the easy removal and replacement of an in jured element. Furthermore, my construction allows of considerable variation in the number of elements (tubes) that may be put into a radiator of given width, thereby to vary the amount of cooling surface in proportion to the water capacity. This is done by merely making each element wider or narrower atits middle part-by the simple expedient of giving each wall sheet more or less bend; All of these and the previously described features, as well as a feature'of pleasing appearance, re due to the features of construction herein described.

I From the foregoing detailed description of a preferred specific formof'my invention, the invention itself will be. readily understood. As I have before stated, I have made this detailed and specific explanation, not for the purpose of limiting my invention particularly thereto but for the purpose of fully explaining the invention itself; believing my invention tobe broad in its nature and scope and not limited except as specifically stated by the following claims.

'front and rear edges for each element; the

corrugations of the said two walls of each element being arranged in nesting relation so that the water course through the element is sinuous; adjacent elements of said radi ator being assembled in opposing relation so that points of adjacent elements at the bends in their walls are in contact with each other, and the said adjacent elements being secured together by. being secured at said points of contact.

52. A radiator core comprising plurality ofwater carrying elements eacl embodying two transversely corrugated walls arranged in nestingjrelation to each other, the

' longitudinal edges of said walls being joined directly together to form thin front and rear edges for each element,-each of said Walls being bent along a longitudinal medial line so that the middle portions of the'walls of each element are spac-ed apart to provide a water space; adjacent elements oftheradiator being assembled in opposing relation so that points of adjacent elements at the bends in their walls and on the outwardly projecting parts of. the corrugations are in contact with each other; the said adjacent elements at their front and rear edges being spaced from each other, leaving at their front and rear edges' completely open air spaces between them. i V a A radiator comprising a plurality of water carrying elements each comprising Ho walls joined di ectly together to form thin front and rear edges for each element.

the walls of each element being bent along a longitudinal medial line so that the middle portions of the Walls of each element are spaced apart and the elements thus thickened to provide a water space; the assembled'elements having their thick parts opposite and in direct contact with each other and the front and rear edges of djacent elements being free of and unconnected with each other, and the walls of the elements at their thickened parts being transversely corrugated so as to provide air passages between adjacent elements. In witness that I claim the foregoing I havehei'eunto subscribed my name thislOth day of-April 1919. i 1

; RUDOLPH" NAUJOKS. Witness:

VIRGINIA BERINGER. 

